package com.itheima.reggie.controller;

import com.itheima.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

@RestController
@Slf4j
@RequestMapping("/common")
public class CommonController {

    @Value("${reggie.path}")
    private String basePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws IOException {

        String suffix = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));

        String filename = UUID.randomUUID().toString() + suffix;


        File dir = new File(basePath);
        if (!dir.exists()) {
            dir.mkdirs();
        }

        file.transferTo(new File(basePath+filename));
        return R.success(filename);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response)throws IOException{

        FileInputStream is = new FileInputStream(basePath + name);

        ServletOutputStream os = response.getOutputStream();

        IOUtils.copy(is, os);
        is.close();

    }
}
